void Scene::buildLight(Json::Value light) {
lights.push_back(new Light(
getVec4(light["center"]),
getVec4(light["ambient"]),
getVec4(light["diffuse"]),
getVec4(light["specular"]),
getVec4(light.get("direction",light["center"])),
light.get("angle",180).asFloat()));
}
ray Mouse::getRay(const Camera & camera, float win_width, float win_height)
{
ray myRay;
float x = (2.0f * *mouseX) / win_width - 1.0f;
float y = 1.0f - (2.0f * *mouseY) / win_height;
float z = -1.0f;
vec rayNds = getVec(x, y, z);
float rayClip[] = {rayNds.x, rayNds.y, z, 1.0};
float rayEye[4];
float tempInverse[16];
float rayWorld[4];
matInverse(&tempInverse[0]);
matMultVec4fUtil(rayEye, rayClip, &tempInverse[0]);
rayEye[2] = z;
rayEye[3] = 0.0;
matMultVec4fUtil(rayWorld, rayEye, &tempInverse[0]);
vec4 rayWor = getVec4(rayWorld[0], rayWorld[1], rayWorld[2], rayWorld[3]);
// don't forget to normalise the vector at some point
rayWor = vec4Normalize(rayWor);
myRay.origin.x = camera.position.x;
myRay.origin.y = camera.position.y;
myRay.origin.z = camera.position.z;
myRay.direction.x = rayWor.x;
myRay.direction.y = rayWor.y;
myRay.direction.z = rayWor.z;
myRay.direction.w = rayWor.w;
return myRay;
}
bool Model::loadCollada(std::string filename){
//Load the collada xml file
rapidxml::file<> xmlFile(filename.c_str());
rapidxml::xml_document<> doc;
doc.parse<0>(xmlFile.data());
bool zup = std::string(doc.first_node()->first_node("asset")->first_node("up_axis")->value()) == "Z_UP";
//Load textures
rapidxml::xml_node<> *images = doc.first_node()->first_node("library_images");
if(images->first_node("image") == 0){
Logger::error << "Couldn't load model: file contains no texture data." << std::endl;
return false;
}
std::map<std::string, unsigned int> textures;
for(rapidxml::xml_node<> *image = images->first_node("image"); image != 0; image = image->next_sibling("image")){
textures.insert(std::pair<std::string, unsigned int>(image->first_attribute("id")->value(), loadTextureFromPNG(filename.substr(0, filename.find_last_of("\\/")+1) + image->first_node("init_from")->value())));
}
//Load effects
//TODO: only supports common profiles using phong techniques
rapidxml::xml_node<> *effectsNode = doc.first_node()->first_node("library_effects");
if(effectsNode->first_node("effect") == 0){
Logger::error << "Couldn't load model: file contains no effects data." << std::endl;
return false;
}
std::map<std::string, Material> effects;
for(rapidxml::xml_node<> *effect = effectsNode->first_node("effect"); effect != 0; effect = effect->next_sibling("effect")){
rapidxml::xml_node<> *profile = effect->first_node("profile_COMMON");
if(profile != 0){
rapidxml::xml_node<> *technique = profile->first_node("technique");
Material mat;
rapidxml::xml_node<> *phong = technique->first_node("phong");
if(phong != 0){
if(phong->first_node("emission") != 0){
mat.emission = getVec4(phong->first_node("emission")->first_node("color"));
}
if(phong->first_node("ambient") != 0){
mat.ambient = getVec4(phong->first_node("ambient")->first_node("color"));
}
if(phong->first_node("diffuse") != 0){
if(phong->first_node("diffuse")->first_node("color") != 0){
mat.diffuse = getVec4(phong->first_node("diffuse")->first_node("color"));
}
if(phong->first_node("diffuse")->first_node("texture") != 0){
mat.diffuseTexture = textures.at(searchByAttribute(profile, "sid",
searchByAttribute(profile, "sid", phong->first_node("diffuse")->first_node("texture")->first_attribute("texture")->value(), "newparam")
->first_node("sampler2D")->first_node("source")->value()
, "newparam")->first_node("surface")->first_node("init_from")->value());
}
}
if(phong->first_node("specular") != 0){
if(phong->first_node("specular")->first_node("color") != 0){
mat.specular = getVec4(phong->first_node("specular")->first_node("color"));
}
if(phong->first_node("specular")->first_node("texture") != 0){
mat.specularTexture = textures.at(searchByAttribute(profile, "sid",
searchByAttribute(profile, "sid", phong->first_node("specular")->first_node("texture")->first_attribute("texture")->value(), "newparam")
->first_node("sampler2D")->first_node("source")->value()
, "newparam")->first_node("surface")->first_node("init_from")->value());
}
}
if(phong->first_node("shininess") != 0){
mat.shininess = std::stof(phong->first_node("shininess")->first_node("float")->value());
}
} else {
Logger::error << "Couldn't load model: material doesn't use the phong technique." << std::endl;
return false;
}
if(technique->first_node("extra") != 0 && technique->first_node("extra")->first_node("technique")->first_node("bump") != 0){
mat.bumpmapTexture = textures.at(searchByAttribute(profile, "sid",
searchByAttribute(profile, "sid", technique->first_node("extra")->first_node("technique")->first_node("bump")->first_node("texture")->first_attribute("texture")->value(), "newparam")
->first_node("sampler2D")->first_node("source")->value()
, "newparam")->first_node("surface")->first_node("init_from")->value());
}
effects.insert(std::pair<std::string, Material>(effect->first_attribute("id")->value(), mat));
} else {
Logger::error << "Couldn't load model: material doesn't have a profile_COMMON tag." << std::endl;
return false;
}
}
//Load materials
//TODO: make them overridable (collada spec))
rapidxml::xml_node<> *materialsNode = doc.first_node()->first_node("library_materials");
if(materialsNode->first_node("material") == 0){
Logger::error << "Couldn't load model: file contains no material data." << std::endl;
return false;
}
std::map<std::string, Material> materials;
for(rapidxml::xml_node<> *material = materialsNode->first_node("material"); material != 0; material = material->next_sibling("material")){
materials.insert(std::pair<std::string, Material>(material->first_attribute("id")->value(), effects.at(std::string(material->first_node("instance_effect")->first_attribute("url")->value()).substr(1))));
}
//Load geometry
std::map<std::string, Mesh> meshes;
rapidxml::xml_node<> *geometries = doc.first_node()->first_node("library_geometries");
if(geometries->first_node("geometry") == 0){
Logger::error << "Couldn't load model: file contains no geometry data." << std::endl;
return false;
}
for(rapidxml::xml_node<> *geometry = geometries->first_node("geometry"); geometry != 0; geometry = geometry->next_sibling("geometry")){
Mesh mesh;
rapidxml::xml_node<> *meshNode = geometry->first_node("mesh");
if(meshNode == 0){
Logger::error << "Couldn't load model: The loader can only load geometry of type \"mesh\" (geometry with name: " << geometry->first_attribute("name")->value() << ")." << std::endl;
return false;
}
if(meshNode->first_node("polylist") == 0){
Logger::error << "Couldn't load model: The loader can only load meshes that use polylists. (geometry with name: " << geometry->first_attribute("name")->value() << ")." << std::endl;
return false;
}
//TODO: allow for multiple data types
//<name, <stride, data>>
std::map<std::string, std::pair<unsigned int, std::vector<float>>> sources;
GLenum dataType;
for(rapidxml::xml_node<> *source = meshNode->first_node("source"); source != 0; source = source->next_sibling("source")){
std::vector<float> container;
dataType = readData(&container, source);
if(dataType == GL_NONE){
return false;
}
sources.insert(std::pair<std::string, std::pair<unsigned int, std::vector<float>>>(source->first_attribute("id")->value(), std::pair<unsigned int, std::vector<float>>(std::stoi(source->first_node("technique_common")->first_node("accessor")->first_attribute("stride")->value()), container)));
}
//TODO: same data vertex merging (aka indexing)
for(rapidxml::xml_node<> *polylist = meshNode->first_node("polylist"); polylist != 0; polylist = polylist->next_sibling("polylist")){
std::vector<float> openglData;
std::vector<unsigned int> indices;
std::vector<std::string> tempContainer;
std::vector<int> colladaIndices;
split(polylist->first_node("p")->value(), " ", &tempContainer);
for(std::string s : tempContainer){
colladaIndices.push_back(std::stoi(s));
}
std::vector<float> vertexData;
float vertexOffset;
float vertexStride;
std::vector<float> normalData;
float normalOffset;
float normalStride;
std::vector<float> uvData;
float uvOffset;
float uvStride;
std::pair<unsigned int, std::vector<float>> pair;
for(rapidxml::xml_node<> *input = polylist->first_node("input"); input != 0; input = input->next_sibling("input")){
std::string semantic(input->first_attribute("semantic")->value());
if(semantic == "VERTEX"){
pair = sources.at(std::string(meshNode->first_node("vertices")->first_node("input")->first_attribute("source")->value()).substr(1));
vertexData = pair.second;
vertexOffset = std::stoi(input->first_attribute("offset")->value());
vertexStride = pair.first;
} else if(semantic == "NORMAL"){
pair = sources.at(std::string(input->first_attribute("source")->value()).substr(1));
normalData = pair.second;
normalOffset = std::stoi(input->first_attribute("offset")->value());
normalStride = pair.first;
} else if(semantic == "TEXCOORD"){
pair = sources.at(std::string(input->first_attribute("source")->value()).substr(1));
uvData = pair.second;
uvOffset = std::stoi(input->first_attribute("offset")->value());
uvStride = pair.first;
} else {
Logger::error << "Unknown input semantic: " << semantic << std::endl;
return 0;
}
}
PolyGroup poly;
poly.elements = std::stoi(polylist->first_attribute("count")->value())*3;
//Generate vertices
for(unsigned int i = 0; i < poly.elements; i++){
openglData.push_back(vertexData.at(colladaIndices.at(i*3+vertexOffset)*vertexStride));
if(zup){
openglData.push_back(vertexData.at(colladaIndices.at(i*3+vertexOffset)*vertexStride+2));
openglData.push_back(-vertexData.at(colladaIndices.at(i*3+vertexOffset)*vertexStride+1));
} else {
openglData.push_back(vertexData.at(colladaIndices.at(i*3+vertexOffset)*vertexStride+1));
openglData.push_back(vertexData.at(colladaIndices.at(i*3+vertexOffset)*vertexStride+2));
}
openglData.push_back(normalData.at(colladaIndices.at(i*3+normalOffset)*normalStride));
if(zup){
openglData.push_back(normalData.at(colladaIndices.at(i*3+normalOffset)*normalStride+2));
openglData.push_back(-normalData.at(colladaIndices.at(i*3+normalOffset)*normalStride+1));
} else {
openglData.push_back(normalData.at(colladaIndices.at(i*3+normalOffset)*normalStride+1));
openglData.push_back(normalData.at(colladaIndices.at(i*3+normalOffset)*normalStride+2));
}
openglData.push_back(uvData.at(colladaIndices.at(i*3+uvOffset)*uvStride));
//collada stores the uv data the other way around. how silly.
openglData.push_back(1.0f - uvData.at(colladaIndices.at(i*3+uvOffset)*uvStride+1));
//temp index
indices.push_back(i);
}
poly.vaoid = sendToOpengl(openglData, indices);
poly.material = materials.at(polylist->first_attribute("material")->value());
mesh.addPolyGroup(poly);
}
meshes.insert(std::pair<std::string, Mesh>(geometry->first_attribute("id")->value(), mesh));
//this->meshes.insert(std::pair<std::string, std::pair<glm::mat4, Mesh>>(std::string(geometry->first_attribute("id")->value()).substr(1), std::pair<glm::mat4, Mesh>(glm::mat4(1.0f), mesh)));
}
//Load scene
rapidxml::xml_node<> *scenes = doc.first_node()->first_node("library_visual_scenes");
if(scenes->first_node("visual_scene") == 0){
Logger::error << "Couldn't load model: file contains no scene data." << std::endl;
return false;
} else {
rapidxml::xml_node<> *scene = scenes->first_node("visual_scene");
for(rapidxml::xml_node<> *node = scene->first_node("node"); node != 0; node = node->next_sibling("node")){
if(node->first_node("instance_geometry") != 0){
std::vector<float> matrix;
std::vector<std::string> tempContainer;
glm::mat4 mat4 = glm::mat4(1.0f);
if(node->first_node("matrix") == 0){
split(node->first_node("translate")->value(), " ", &tempContainer);
mat4 = glm::translate(mat4, glm::vec3(std::stof(tempContainer[0]), std::stof(tempContainer[2]), -std::stof(tempContainer[1])));
tempContainer.clear();
split(searchByAttribute(node, "sid", "rotationX", "rotate")->value(), " ", &tempContainer);
mat4 = glm::rotate(mat4, glm::radians(std::stof(tempContainer[3])), glm::vec3(1.0f, 0.0f, 0.0f));
tempContainer.clear();
split(searchByAttribute(node, "sid", "rotationZ", "rotate")->value(), " ", &tempContainer);
mat4 = glm::rotate(mat4, glm::radians(std::stof(tempContainer[3])), glm::vec3(0.0f, 1.0f, 0.0f));
tempContainer.clear();
split(searchByAttribute(node, "sid", "rotationY", "rotate")->value(), " ", &tempContainer);
mat4 = glm::rotate(mat4, glm::radians(std::stof(tempContainer[3])), glm::vec3(0.0f, 0.0f, -1.0f));
tempContainer.clear();
split(node->first_node("scale")->value(), " ", &tempContainer);
mat4 = glm::scale(mat4, glm::vec3(std::stof(tempContainer[0]), std::stof(tempContainer[2]), std::stof(tempContainer[1])));
//mat4 = glm::mat4(1.0f);
} else {
split(node->first_node("matrix")->value(), " ", &tempContainer);
for(std::string s : tempContainer){
matrix.push_back(std::stof(s));
}
glm::mat4 mat4 = glm::make_mat4(matrix.data());
if(std::string(doc.first_node()->first_node("asset")->first_node("up_axis")->value()) == "Z_UP"){
mat4 = convertToRightHandedCoords(mat4);
}
}
this->meshes.insert(std::pair<std::string,std::pair<glm::mat4, Mesh>>(
node->first_attribute("id")->value(),
std::pair<glm::mat4, Mesh>(
mat4,
meshes.at(std::string(node->first_node("instance_geometry")->first_attribute("url")->value()).substr(1)))));
}
}
}
rapidjson::Document animDoc;
if(readJsonFile(filename.substr(0, filename.find_last_of("/")+1) + "animation.json", animDoc)){
rapidxml::xml_node<> *animations = doc.first_node()->first_node("library_animations");
if(animations->first_node("animation") != 0){
std::map<std::string, std::vector< std::pair<float, glm::vec3> > > locationKeyframes;
std::map<std::string, std::vector< std::pair<float, glm::vec3> > > rotationKeyframes;
for(rapidxml::xml_node<> *animNode = animations->first_node("animation"); animNode != 0; animNode = animNode->next_sibling("animation")){
std::vector<float> inputContainer;
readData(&inputContainer, searchByAttribute(
animNode,
"id",
std::string(searchByAttribute(
animNode->first_node("sampler"),
"semantic",
"INPUT",
"input"
)->first_attribute("source")->value()).substr(1),
"source"));
std::vector<float> outputContainer;
readData(&outputContainer, searchByAttribute(
animNode,
"id",
std::string(searchByAttribute(
animNode->first_node("sampler"),
"semantic",
"OUTPUT",
"input"
)->first_attribute("source")->value()).substr(1),
"source"));/*
std::vector< std::pair<float, glm::vec3> > keyframes;
for(int i = 0; i < inputContainer.size(); i++){
keyframes.push_back(std::pair<float, glm::vec3>(inputContainer.at(i), outputContainer.at(i)));
}*/
std::string target = animNode->first_node("channel")->first_attribute("target")->value();
std::string meshName = target.substr(0, target.find_first_of("/"));
if(target.substr(target.find_first_of("/")+1, target.find_first_of(".")-target.find_first_of("/")-2) == "rotation"){
if(!rotationKeyframes.count(meshName)){
rotationKeyframes.insert(std::pair<std::string, std::vector< std::pair<float, glm::vec3> > >(meshName, std::vector< std::pair<float, glm::vec3> >()));
}
for(int i = 0; i < inputContainer.size(); i++){
if(rotationKeyframes.at(meshName).size() <= i){
rotationKeyframes.at(meshName).push_back(std::pair<float, glm::vec3>(inputContainer.at(i), glm::vec3(0.0f, 0.0f, 0.0f)));
}
if(target.substr(target.find_first_of("/")+1, target.find_first_of(".")-target.find_first_of("/")-1) == "rotationX"){
rotationKeyframes.at(meshName).at(i).second.x = outputContainer.at(i);
} else if(target.substr(target.find_first_of("/")+1, target.find_first_of(".")-target.find_first_of("/")-1) == "rotationY"){
rotationKeyframes.at(meshName).at(i).second.y = outputContainer.at(i);
} else if(target.substr(target.find_first_of("/")+1, target.find_first_of(".")-target.find_first_of("/")-1) == "rotationZ"){
rotationKeyframes.at(meshName).at(i).second.z = outputContainer.at(i);
}
}
} else if(target.substr(target.find_first_of("/")+1, target.find_first_of(".")) == "location"){
if(locationKeyframes.count(meshName)){
locationKeyframes.insert(std::pair<std::string, std::vector< std::pair<float, glm::vec3> > >(meshName, std::vector< std::pair<float, glm::vec3> >()));
}
for(int i = 0; i < inputContainer.size(); i++){
if(locationKeyframes.at(meshName).size() <= i){
locationKeyframes.at(meshName).push_back(std::pair<float, glm::vec3>(inputContainer.at(i), glm::vec3(0.0f, 0.0f, 0.0f)));
}
if(target.substr(target.find_first_of(".")+1) == "X"){
locationKeyframes.at(meshName).at(i).second.x = outputContainer.at(i);
} else if(target.substr(target.find_first_of(".")+1) == "Y"){
locationKeyframes.at(meshName).at(i).second.y = outputContainer.at(i);
} else if(target.substr(target.find_first_of(".")+1) == "Z"){
locationKeyframes.at(meshName).at(i).second.z = outputContainer.at(i);
}
}
} else {
Logger::info << "unknown animation target: " << target << std::endl;
}
}
for (rapidjson::SizeType i = 0; i < animDoc.Size(); i++) {
Animation animation;
rapidjson::Value& animjson = animDoc[i];
animation.mesh = animjson["mesh"].GetString();
int start = animjson["startKeyframe"].GetInt();
int end = animjson["endKeyframe"].GetInt();
for(int j = start; j <= end; j++){
glm::mat4 mat4 = this->meshes.at(animation.mesh).first;
glm::vec3 rotation = rotationKeyframes.count(animation.mesh) ? rotationKeyframes.at(animation.mesh).at(j).second : glm::vec3(0.0f, 0.0f, 0.0f);
glm::vec3 translation = locationKeyframes.count(animation.mesh) ? locationKeyframes.at(animation.mesh).at(j).second : glm::vec3(0.0f, 0.0f, 0.0f);
if(zup){
mat4 = glm::translate(mat4, glm::vec3(translation.x, translation.z, -translation.y));
mat4 = glm::rotate(mat4, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
mat4 = glm::rotate(mat4, glm::radians(rotation.z), glm::vec3(0.0f, 1.0f, 0.0f));
mat4 = glm::rotate(mat4, glm::radians(rotation.y), glm::vec3(0.0f, 0.0f, -1.0f));
} else {
mat4 = glm::translate(mat4, glm::vec3(translation.x, translation.y, translation.z));
mat4 = glm::rotate(mat4, glm::radians(rotation.x), glm::vec3(1.0f, 0.0f, 0.0f));
mat4 = glm::rotate(mat4, glm::radians(rotation.y), glm::vec3(0.0f, 1.0f, 0.0f));
mat4 = glm::rotate(mat4, glm::radians(rotation.z), glm::vec3(0.0f, 0.0f, 1.0f));
}
animation.keyframes.push_back(std::make_pair(rotationKeyframes.at(animation.mesh).at(j).first, mat4));
}
this->animations.insert(std::make_pair(animjson["name"].GetString(), animation));
}
}
}
return true;
}
Model* Scene::buildModel(Json::Value model) {
string type = model["class"].asString();
Model *retModel;
// menger
if(type.compare("Menger") == 0) {
vec3 center = getVec3(model.get("center", "[0,0,0]"));
printVec("center",center);
float radius = model.get("radius", "1.0").asFloat();
int subdivs = model.get("subdivisions", "2").asInt();
retModel = new Menger(center, radius, subdivs);
}
// sphere
else if(type.compare("Sphere") == 0) {
Sphere *sphere;
if(!model.isMember("ambient")) {
sphere = new Sphere(
model["radius"].asFloat(),
model["subdivs"].asInt(),
lights.size());
} else {
sphere = new Sphere(
model["radius"].asFloat(),
model["subdivs"].asInt(),
lights.size(),
getVec4(model.get("ambient","[1,0,1,1]")),
getVec4(model.get("diffuse","[1,0.8,0,1]")),
getVec4(model.get("specular","[1,0,1,1]")));
}
vector<Light*>::iterator it;
int light = 0;
for(it = lights.begin(); it != lights.end(); it++) {
sphere->setLight((*it), light++);
}
retModel = sphere;
} else if(type.compare("TexTri") == 0) {
retModel = new TexTri(model["texture"].asString().c_str());
printf("created textri\n");
} else if(type.compare("ObjModel") == 0) {
ObjModel *obj = new ObjModel(model["objfile"].asString().c_str(),
lights.size(),
getVec4(model.get("ambient","[1,1,1,1]")),
getVec4(model.get("diffuse","[1,1,1,1]")),
getVec4(model.get("specular","[1,1,1,1]")));
vector<Light*>::iterator it;
int light = 0;
for(it = lights.begin(); it != lights.end(); it++) {
obj->setLight((*it), light++);
}
retModel = obj;
} else if(type.compare("Tesseract") == 0) {
Tesseract *tess = new Tesseract( lights.size() );
vector<Light*>::iterator it;
int light = 0;
for(it = lights.begin(); it != lights.end(); it++) {
tess->setLight((*it), light++);
}
retModel = tess;
} else if(type.compare("Particles") == 0) {
Particles *part = new Particles( model.get("number",50).asInt() );
retModel = part;
}
// map model if it has an id
if(model.isMember("id")) {
string id = model["id"].asString();
nodes[id] = retModel;
idModels[id] = retModel;
}
return retModel;
}
